Many netizens don't know why the computer can't be opened and how to solve it. Today, Bian Xiao will give you a brief explanation! Related questions: More >> How to set the computer power-on password? Why do I have to press F 1 every time I turn it on? There is no internet at home, and I want to download a piece of information about Jinshan: more >> What will computers look like in the future? Look at the future hardware development. Microsoft will apply for a patent for the computer shutdown process. Computer radiation seriously damages the eyes, causing 300 cases every year.
Whether it's a laptop or a desktop, sometimes the computer won't open for unknown reasons. After a period of summary, it may be helpful for you to look at the following discussion ~ ~ Booting into the BIOS may be that the BIOS battery is running low. If so, please replace the BIOS battery.
If the BIOS does not return to the factory settings, you can also try to discharge the BIOS battery.
If not, please repair the system.
1. Press F8 when starting the machine until advanced options appear. Select Last Known Good Configuration and press Enter to repair it.
2. Please press F8 to enter the safe mode, and use the system that comes with the system to restore it, so that it can be repaired when you don't have this fault.
3. If the fault remains, use the system disk to repair it, open the command prompt and enter SFC/SCANNOW(SFC and/) to insert it into the original system disk repair system, and the system will automatically compare and repair it.
4. If the fault still exists, set the optical drive as the first boot device in the BIOS, insert the system installation disk, and press the R key to select "Repair Installation".
5. If the fault still exists, it is recommended to reinstall the operating system.
If not, it is recommended to repair the installation, which can not only repair the system, but also keep the programs and files of disk C from being lost.
The computer crashes when it is turned on, which can be divided into two types: self-check crash and loading operating system crash. The specific maintenance methods of computer self-check crash fault are as follows.
(1) First, determine the situation before the computer breaks down. If the computer crashes after moving, it may be that the computer vibrates too much during moving, resulting in loose internal parts of the computer and poor contact, leading to the crash. Open the chassis and re-fix the memory, graphics card and other equipment.
(2) If the computer crashes after upgrading the BIOS program, it may be that the upgrade of the BIOS program failed or the upgraded BIOS program file is incompatible with the computer hardware, and the original BIOS program file can be used for recovery.
(3) If the computer crashes after setting the BIOS program and cannot be started, just modify the set BIOS settings or use the "Load BIOS Default" option in the BIOS program to restore the BIOS program.
(4) If the CPU is overclocked or the computer crashes after upgrading, it may be that the CPU is overclocked or upgraded and the computer crashes. Just restore the CPU frequency to the normal frequency or the state before upgrading.
(5) If the display screen prompts "keyboard error" or "hard disk installation failed" when the computer is turned on, it means that the related equipment is not connected correctly or damaged, just reconnect or replace the faulty equipment.
(6) If the screen prompts "Disk Boot Failure", it means that the system file is lost or damaged, or the hard disk partition table is damaged. Repair system files or restore the hard disk partition table.
(7) If it is not the above problem, check whether the chassis is clean. Because dust corrodes computer circuits and interfaces, it will cause poor contact between devices and cause crashes, so cleaning dust and equipment interfaces can eliminate the faults caused by dust.
(8) If the fault is not eliminated, finally, the compatibility and quality problems of hardware equipment are eliminated by replacement.
The troubleshooting methods of computer crash when loading the operating system are as follows.
(1) First, judge according to the displayed error prompt. If you are prompted at startup that the system file cannot be found, it may be that the system file is missing or damaged. During maintenance, the lost files can be copied from other computers with the same operating system to the faulty computer (some system files are not common).
(2) If a blue screen appears at startup, it means that the specified file cannot be found in the system file, which means that the computer cannot read the system file because the hard disk is broken. Start the computer with the startup disk, run Scandisk program, and detect and repair the bad track of the hard disk.
(3) If there is no such fault, first use anti-virus software to kill virus, and then use "safe mode" to start the computer. If it can't start, it may be that the system file is damaged. Reinstall the operating system.
(4) If you use Safe Mode, you can start the computer, then exit and restart the system to see if it crashes.
(5) If it still crashes, then use the backup Windows registry to restore the system (if the system can't start, use the startup disk) to see if it is normal after recovery.
(6) If it still crashes, enter "Safe Mode", open the "Start/Run" dialog box, enter sfc and press enter, start the "System File Checker" and start testing the system. If an error is found, the screen will prompt the name and path of the specific damaged file, then insert the system CD and select the "Recover File" command, and the lost or lost file will be recovered.
(7) Finally, if the system still crashes, reinstall the operating system.
Discharge the BIOS battery (restore the BIOS factory default). It is recommended to plug and unplug the graphics card and memory, clean and polish the golden finger of the graphics card and memory.
Unable to start the operating system. Various diagnostic methods are as follows.
First, check whether the operating system has started when the computer is turned on. If the operating system crashes, blue screen or restarts automatically, it means that the partition table and hard disk master boot record are normal, and the failure causes such as partition table damage, hard disk master boot record damage and hard disk partition end flag loss have been eliminated. Then use the following methods for diagnosis.
Step 1: First, start the computer in safe mode to see if it can be started. If it can't start, it may be infected with a virus, lost system files, damaged operating system, damaged hard disk, hardware device conflict or hardware problems. Go to step 4. If the safe mode can be started, it may be that the hardware driver is incompatible with the system, the operating system has a problem or a virus infection.
Step 2: Then run anti-virus software. If there is a virus, it may be caused by it. Restart the computer after antivirus. If it is not normal, you need to reinstall the operating system.
Step 3: If no virus is detected, you can use the "System Restore" function that comes with the operating system to restore the system. If the system is normal after recovery, the fault is caused by system damage. If the fault still exists, it may be caused by the incompatibility between the device driver and the system; Then delete the drivers of sound cards, video cards, network cards and other devices, and then install the drivers one by one. Restart the computer every time you install a device, and check which device's driver caused the failure. After finding out, download the new driver of the faulty equipment and then install it.
Step 4: If you can't boot from safe mode, reinstall the operating system with the installation CD. If the operating system can be installed normally, go to step 7; If the operating system installation fails, such as crash, blue screen, restart, etc. , it should be caused by hardware problems or poor hardware contact.
Step 5: Then clean up the dust in the computer, clean up the golden fingers of memory, graphics cards and other equipment, reinstall the memory and other equipment, and then reinstall the operating system. If the system can be installed normally, it is a fault caused by poor contact.
Step 6: If the system still cannot be installed, it may be a hardware problem. Then use the replacement method to check the hardware failure, and replace the hardware after finding it.
Step 7: If the operating system can be installed normally and the fault disappears after installation, it is a fault caused by system file damage.
Step 8: If the fault still exists after installing the operating system, it may be caused by bad tracks on the hard disk or incompatibility between the device driver and the system. Start the computer in safe mode. If it can't be started, it is the failure caused by the broken hard disk. Then use NDD disk tool to repair the bad track.
Step 9: If the safe mode can be started, it is caused by the incompatibility between the device driver and the system. Then delete the sound card, video card, network card and other devices, and then install the drivers one by one, and install them once to check which device's driver caused the failure. After finding out, download the new driver of the faulty equipment and then install it.